BIOM 2000 Chapter Notes - Chapter 13: Vital Capacity, Chronic Obstructive Pulmonary Disease, Hemoglobin

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Include: nose, pharynx, larynx, trachea, bronchi, bronchioles, lungs (alveoli/terminal air sacs) a: alveoli: site of gas exchange with the blood, all other organs in the system are just passageways that purify, humidify and warm incoming air. Rests on a network of thin-walled veins warming the air as it moves past: this is why we have nosebleeds. Palate: separates the nasal cavity from the oral cavity: hard palate: palate supported by bone (anterior, soft palate: palate unsupported by bone (posterior, paranasal sinuses: rings surrounding nasal cavity in the bones. Lighten the skull, act as resonance chambers for speech and produce mucus which drains into nasal cavities. Nasolacrimal ducts: drain tears from the eyes and empty into the nasal cavities: blowing your nose has a suctioning effect that helps drain the sinuses. Problems: cleft palate: failure of the bones forming the palate to fuse medially.

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